12.00pm (AEDT) – Queensland Premier Annastacia Palaszczuk delivers the State of the State address – Brisbane

12.30pm (AEDT) – Director of Jobs and Skills Australia, Professor Peter Dawkins, addresses the National Press Club – Australia

8.45pm (AEDT) – Nobel Prize for Chemistry announced

World Animal Day

Start of World Space Week (until 10 Oct)

Cinnamon Roll Day

Birthdays for Susan Sarandon (1946), Alicia Silverstone (1976), and Dakota Johnson (1989)

Anniversary of:
• the deaths of Dutch painter Rembrandt (1669), Henrietta Lacks, the woman whose cancer cells provided one of the most important cell lines in medical research (1951), and musician Janis Joplin (1970)
• the Soviet Union launching Sputnik I, the first artificial Earth satellite (1957)
• the launch of WikiLeaks by Julian Assange (2006)